mod_audit_auth: Ignore FAST authentication events by default FAST is more like a cookie that allows linking new connections to a previous (e.g. password) authentication. Since we assume that FAST tokens are secure (not user generated) and not shareable, it reduces a lot of noise by filtering out uninteresting authentication events.

# Introduction

This module sends a [version query][xep0092] to clients when they
connect, and logs the response, allowing statistics of client usage to
be recorded.

Note that since this is per connection, there will be a bias towards
mobile clients on bad connections.

## Example

    info    Running Running Swift version 4.0